Document
What is a .pptx file?
A .pptx file is a PowerPoint presentation — slides, notes and media in one file.
This extension has been used by more than one format
3 different formats have claimed .pptx over the years, so two files with the same extension aren't necessarily the same kind of thing.
How to open a .pptx file
- WindowsPowerPoint
- WindowsLibreOffice Impress
- WindowsGoogle Slides
- MacKeynote
- MacPowerPoint
How to convert a .pptx file
- Export to .pdf for a handout, or .mp4 to make a video of the deck.
MIME type
When a .pptx file travels over the web, servers label it with this MIME type:
application/vnd.openxmlformats-officedocument.presentationml.presentationThe technical record
For archivists, developers and the merely curious: these are the PRONOM registry entries for .pptx.
| Format name | Version | MIME type | PUID |
|---|---|---|---|
| Microsoft Powerpoint for Windows | 2007 onwards | application/vnd.openxmlformats-officedocument.presentationml.presentation | fmt/215 |
| Microsoft Office Encrypted Document | 2007 Onwards | — | fmt/494 |
| PPTX Strict OOXML Presentation | 2007 onwards | application/vnd.openxmlformats-officedocument.presentationml.presentation | fmt/1829 |